X-ray system with a beam-gating diaphragm, and method for...

Details X-ray system with a beam-gating diaphragm, and method for... X-ray system with a beam-gating diaphragm, and method for...

2006-10-10

2006-10-10

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Beam control

Collimator

C378S098120, C250S515100

Reexamination Certificate

active

07120231

ABSTRACT:
In a method for automatic adjustment of a diaphragm in an x-ray system, the diaphragm having a number of adjustable diaphragm elements for a subsequent x-ray exposure of an examination subject, the individual diaphragm elements are respectively positioned such that, considered in a projection lying in a detector plane, abut the contours of the acquisition subject or are situated at a small distance therefrom for this positioning, first a subject localization exposure is generated with a low radiation dose with an open diaphragm. This subject localization exposure is analyzed to determine contours of the exposure subject. The positions of the diaphragm elements are calculated using the determined contours, and then the diaphragm elements are moved into the calculated positions.

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